/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.spark.network.shuffledb;

import java.util.Locale;

/**
 * The enum `DBBackend` use to specify a disk-based store used in shuffle service local db.
 * Support the use of LevelDB and RocksDB.
 */
public enum DBBackend {
    LEVELDB(".ldb"), ROCKSDB(".rdb");

    private final String fileSuffix;

    DBBackend(String fileSuffix) {
      this.fileSuffix = fileSuffix;
    }

    public String fileName(String prefix) {
      return prefix + fileSuffix;
    }

    public static DBBackend byName(String value) {
      return DBBackend.valueOf(value.toUpperCase(Locale.ROOT));
    }
}
